Giant Scale Restraints ; what do you use??? (Full Version)

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zzw26n -> Giant Scale Restraints ; what do you use??? (3/21/2006 6:48:44 PM)



On my 28% Extra I use the padded tuning fork that goes into the ground and cradles the stab on both sides if the fuse, works great for that size of Aircraft.

What do other Pilots use to restrain there 35%, 40% while starting? Wouldn't it have to be something pretty big?


thanks for any input , zz



bhanley -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 6:54:28 PM)

Its usually another guy - preferally not too thin....



bubbagates -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 7:17:30 PM)

ZZ,

I use the same thing you do. I have a couple of sizes I made. One for glow and one for gas. Mine fold down in one direction only so all I have to do is back the plane up far enough so that it lays down

The ones for gas are a bit wider and have a longer garden spike on them. My biggest is a 30 percent Yak




Bass1 -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 8:48:27 PM)

I can't remember the guys name but I believe he is in a club in Florida. He sent me a few photos of these cool safety devices. These pull vertically out of the ground for airplane release. They probably could be finished in a day with the right crew.



GalenB -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 9:03:49 PM)

I prefer a person as a holder too. But if one is not available then I use a rope around the tail. My rope is thicker parachute type rope with a carabineer to help get it hooked around fence posts etc. I use a thicker softer type of rope rather then thinner harder twisted nylon type rope...



dork_blaster -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 9:35:02 PM)

I use a big soft rope as already suggested or a person I trust. I make sure the rope is taught before swingin the prop. Wouldn't use a spike in the ground (for big planes) even if I could get spike in the ground - anyone who's tried to dig a hole in SoCal knows what I'm talking about! :(

DB



RTK -> RE: Giant Scale Restraints ; what do you use??? (3/21/2006 11:13:02 PM)

If I can not find a willing person I use a Craftsman extra long honking screw driver[:D] Place it two feet in the ground at an angle and use a soft rope around the tail feathers. It will hold a 100cc plane at WOT, but I would never risk trying that in front of the plane. You never can be too safe.



WW2 Ace -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 4:46:44 AM)


quote:

ORIGINAL: zzw26n



On my 28% Extra I use the padded tuning fork that goes into the ground and cradles the stab on both sides if the fuse, works great for that size of Aircraft.

What do other Pilots use to restrain there 35%, 40% while starting? Wouldn't it have to be something pretty big?


thanks for any input , zz


Here is a post I started that may give you some ideas.

http://www.rcuniverse.com/forum/fb.asp?m=3794276



Bass1 -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 5:40:01 AM)

I found the club that has the neat system for restraining large airplanes. It would be great/safer if all the RC clubs had these. Go to www.charlotterc.com and click useful info, then CRCS plane restraints.[sm=thumbup.gif]



Rcpilot -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 7:57:50 AM)

I use a person. Not too hard to find a willing participant around our field. Not too many guys flying gas, and they are intrigued by it. Always somebody willing to stand over the tail.

I don't fly gassers alone--so if I go out and no one is around, I either wait for someone to show up or go home. Only live 6 miles from the field.

I've never been seriously hurt playing with planes. Got my fingers wrapped once while playing with the timing on a 50cc conversion engine. That was enough of a lesson to keep me from ever messing with one when I'm alone at the field. [sm=thumbup.gif]

I'm knocking on my wooden computer desk right now.....................



ifshnee-RCU -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 10:14:19 AM)

Looks like the Punta Gorta field to me. I was just there for JR Challenge



ifshnee-RCU -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 10:16:46 AM)

Don's hobby sells the one I use & it can hold a 40%er



Zeeb -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 3:08:28 PM)

Well this is a question I'm very interested in since I've got to figure out a way to hang on to the model I'm just finishing with a 100 size twin in it while I get it set up... [8|]

On my 50 size gasser I use the tail feathers restraint method to start it, then stand with over it with a leg on each side of the fuselage in front of the stab for the warm up and quick power check.

As you get to the bigger sizes, some method of holding them by the wings needs to be employed as the larger gas engines are capable of doing damage to the tail feathers at high power settings. Holding them by the tail feathers should prevent it from getting away from you on an accidental power increase, but as my buddy can attest, just holding it by the tail feathers while setting up the carb on a ZDZ-80 WILL damage the tail feathers on a certain YAK... [:(]



zzw26n -> RE: Giant Scale Restraints ; what do you use??? (3/22/2006 6:05:20 PM)


Ifshnee,

I use the Midwest restraint also on my 28%, but I'm wondering if it will be able to handle a 35% with a DA-100 ? Maybe for starting, but not throttling up to max. I really like the padded PVC gates that are in a previous post. This uses the wings, provide concrete for the gas drips and looks like it would be easy on the airframe. Now, can I make one for our Field is the question?


thanks for all the insight ............



stomper -> RE: Giant Scale Restraints ; what do you use??? (3/23/2006 12:08:57 PM)

This works.



Zeeb -> RE: Giant Scale Restraints ; what do you use??? (3/23/2006 2:19:31 PM)

Well that's exactly what I use for starting models and have done it with everything but my first trainer. Some models like my Funtana 90 require the strap to go the other way because of the carbon fiber stab supports on the underside of the horizontal stab, or other models that the strap will hit the servos/linkages for the tailfeathers. It's also how my buddy had his Yak held when he damaged the tailfeathers setting up the ZDZ. It works great for starting since I don't think an inadvertent throttle up would let it get away from you, or more precisely IN TO YOU, but it's not good enough to do engine setups IMHO... [8|]



shesha -> RE: Giant Scale Restraints ; what do you use??? (3/24/2006 11:16:17 PM)

I use a boat anchor, the folding type ones, you just plant it down on the ground and push with your foot, it will hold a 36ft boat In high water currents it does a good job of any gas plane size you can think of.

And no I did not buy one for that purpose, I am a fisherman for that purpose.[>:]

http://www.westmarine.com/webapp/wcs/stores/servlet/producte/10001/-1/10001/42722/0/0/anchor/All_2/mode+matchallpartial/0/0



Slyder -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 11:40:54 AM)

Bubbagates,
If you get a chance would you take a pic of your large restraint?
For the Yak I use a large nail with a fender washer welded to the head and rope but for the Ulty with flying wires it would be a pain.[:D]



Ken Bryant -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 2:28:57 PM)

I installed these restrants at our club



RCPilot100 -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 2:29:08 PM)

I am like the others - most of the time, I like someone that I trust to hold on, but for those times when you need to adjust at home - or are gonna do that no no and fly by yourself, I start with a 1 inch diameter rope you can buy at Lowes or Home Depot - about 13-15 feet worth. I take and loop it under the fuselage and LG up front, bring the sides up and over both wings and horizontal stabs and then around a tree or fence post. Tie several knots, pull the plane forward until there is no slack in the rope, and you are good to go. I start the engine at idle, get to the side or behind the plane, and then and only then run the engine up. You can also take several more lenghts of heavy rope and use them to secure the LG sort of forward and to the sides of the plane.

Now before the flaming starts about 'by yourself', let me say that one aspect of what I have done over the past 30 years involves restraining vehicles on chassis dynamometers for testing, all the way up to high performance ones like Nascar and Vipers. Even though our planes are scaled down in comparison, the safest way to restrain a vehicle or our planes is a good mechanical method where each component of the restraint system is capable holding many times the force the vehicle is able to generate. I haven't felt the need to, but you could put a deadman switch on the plane - where if the plane moved more than a predetermined amount, like two inches, you would kill power to the ignition. And again, remember that I am only talking about the safest way to restrain the airplane here, what will hold it the most securely on a consistent basis. As for common sense, you should have someone around 'just in case'. Who that person should be opens up a whole can of worms. Suffice it to say that for me at home when I need to adjust/break in/ trouble shoot, that person is my wife or daughter - one a 25 year experience registered nurse and the other a soon to be MD.

Dan



bubbagates -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 3:14:33 PM)

quote:

ORIGINAL: Slyder

Bubbagates,
If you get a chance would you take a pic of your large restraint?
For the Yak I use a large nail with a fender washer welded to the head and rope but for the Ulty with flying wires it would be a pain.[:D]


Slyder,

Here ya go. The pics are of the one I use for glow planes. The only difference is the spike is longer and the uprights are farther apart. This one is made from 1/2 inch PVC and a 12 inch garden spike and foam pipe insulation. Total cost was 10 bucks for this one and the GS one. I used 3/4 inch PVC for the GS version

As you can see it's capable of laying down. You place it in the ground and if the ground is really soft you tilt it backwards a bit, with the uprights facing towards the back of the plane when they are laying down. Put the plane over top of the uprights in front of the horizontal stabs, rotate the uprights vertical and pull the plane against them.

When you are all done starting tuning and whatever, just pull the plane backwards and theuprights will lay down and be out of the way. No dangerous grabing the plane and picking it up to clear the uprights.

Pic #2 shows that I slotted the "T" fitting and used a 4-40 hex head bolt as the stop which is screwed and epoxied into the horizontal pipe. The GS version has a 8-32 hex head bolt. The spike is in a PVC end cap filled with epoxy and glued to a very short piece of PVC going into the "T" fitting. The ridge inside the "T" fitting has been gound away so that the horizintal pipe can go all the way through and rotate. The length of this pipe dictates how wide the space is between the uprights. I then used 90 degree elbows on the ends of the horizontal pipe and then made the uprights. You can also adjust the lemgth of the uprights to suit your needs. I then covered the uprights with foam pipe insulation.

Your first one will take roughly thirty minutes to get it all cut and dry fitted. Because of the epoxy and pvc glue, you are looking at a total of 24 hours




Slyder -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 11:15:09 PM)

Thanks alot Bubba. Looks like a slick setup.



R/C Foolish -> RE: Giant Scale Restraints ; what do you use??? (3/26/2006 11:49:08 PM)

Try the tailtrap from jlproducts.net. It works great. They have a bunch of cool stands also.

R/C Foolish



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